1 | /* Copyright (C) 2002-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <pthread.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <time.h> |
22 | |
23 | |
24 | #define N 100 |
25 | |
26 | static pthread_once_t once = PTHREAD_ONCE_INIT; |
27 | |
28 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
29 | static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; |
30 | |
31 | static pthread_barrier_t bar; |
32 | |
33 | static int global; |
34 | static int cl_called; |
35 | |
36 | static void |
37 | once_handler1 (void) |
38 | { |
39 | if (pthread_mutex_lock (mutex: &mut) != 0) |
40 | { |
41 | puts (s: "once_handler1: mutex_lock failed" ); |
42 | exit (1); |
43 | } |
44 | puts (s: "once_handler1: locked" ); |
45 | |
46 | int r = pthread_barrier_wait (barrier: &bar); |
47 | if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) |
48 | { |
49 | puts (s: "once_handler1: barrier_wait failed" ); |
50 | exit (1); |
51 | } |
52 | |
53 | puts (s: "once_handler1: going to wait on cond" ); |
54 | |
55 | pthread_cond_wait (cond: &cond, mutex: &mut); |
56 | |
57 | /* We should never get here. */ |
58 | exit (42); |
59 | } |
60 | |
61 | static void |
62 | once_handler2 (void) |
63 | { |
64 | global = 1; |
65 | } |
66 | |
67 | |
68 | static void |
69 | cl (void *arg) |
70 | { |
71 | cl_called = 1; |
72 | } |
73 | |
74 | |
75 | static void * |
76 | tf (void *arg) |
77 | { |
78 | pthread_cleanup_push (cl, NULL) |
79 | |
80 | pthread_once (once_control: &once, init_routine: once_handler1); |
81 | |
82 | pthread_cleanup_pop (0); |
83 | |
84 | /* We should never get here. */ |
85 | puts (s: "pthread_once in tf returned" ); |
86 | exit (1); |
87 | } |
88 | |
89 | |
90 | static int |
91 | do_test (void) |
92 | { |
93 | pthread_t th; |
94 | |
95 | if (pthread_barrier_init (barrier: &bar, NULL, count: 2) != 0) |
96 | { |
97 | puts (s: "barrier_init failed" ); |
98 | return 1; |
99 | } |
100 | |
101 | if (pthread_create (newthread: &th, NULL, start_routine: tf, NULL) != 0) |
102 | { |
103 | puts (s: "first create failed" ); |
104 | return 1; |
105 | } |
106 | |
107 | int r = pthread_barrier_wait (barrier: &bar); |
108 | if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) |
109 | { |
110 | puts (s: "barrier_wait failed" ); |
111 | return 1; |
112 | } |
113 | |
114 | if (pthread_mutex_lock (mutex: &mut) != 0) |
115 | { |
116 | puts (s: "mutex_lock failed" ); |
117 | return 1; |
118 | } |
119 | /* We unlock the mutex so that we catch the case where the pthread_cond_wait |
120 | call incorrectly resumes and tries to get the mutex. */ |
121 | if (pthread_mutex_unlock (mutex: &mut) != 0) |
122 | { |
123 | puts (s: "mutex_unlock failed" ); |
124 | return 1; |
125 | } |
126 | |
127 | /* Cancel the thread. */ |
128 | puts (s: "going to cancel" ); |
129 | if (pthread_cancel (th: th) != 0) |
130 | { |
131 | puts (s: "cancel failed" ); |
132 | return 1; |
133 | } |
134 | |
135 | void *result; |
136 | pthread_join (th: th, thread_return: &result); |
137 | if (result != PTHREAD_CANCELED) |
138 | { |
139 | puts (s: "join didn't return PTHREAD_CANCELED" ); |
140 | return 1; |
141 | } |
142 | puts (s: "joined successfully" ); |
143 | |
144 | printf (format: "once = %d\n" , *(int *) &once); |
145 | |
146 | if (cl_called != 1) |
147 | { |
148 | puts (s: "cleanup handler not called" ); |
149 | return 1; |
150 | } |
151 | |
152 | pthread_once (once_control: &once, init_routine: once_handler2); |
153 | |
154 | if (global != 1) |
155 | { |
156 | puts (s: "global still 0" ); |
157 | return 1; |
158 | } |
159 | |
160 | return 0; |
161 | } |
162 | |
163 | #define TEST_FUNCTION do_test () |
164 | #include "../test-skeleton.c" |
165 | |